Electrical cloth-cutting machine.



PATENTED AUG. 20, 1907.

B. M. WARINGL ELECTRICAL CLOTH CUTTING MACHINE. APPLICATION FILED JULY 11, 1906. RENEWED JULY 26, 1901.

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No. 863,956. PATENTBD AUG. 20, 1907. E. M. WARING.

ELECTRICAL CLOTH CUTTING MACHINE.

APPLIOATION FILED JULY 11, 1906. RENEWED JULY 26,1907.

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EDWARD M. WARING, OF NEW YORK, N. Y.

ELECTRICAL CLOTH-CUTTING MACHINE.

Specification of Letters Patent.

Patented Aug. 20, 1907.

Application filed July 11,1906,SBria1N0. 325,588. Renewed July 26, 1907. Serial No. 385,709.

To all whom it may concern:

Be it known that I, Fmwann M. WARING, a citizen of the United States of America, and a resident of the city of New York, county of Kings, State of New York, in the borough of Brooklyn, have invented certain new and useful improvements in Electrical Cloth- Gutting Machines, of which the following is a specification.

The present invention relates to electrically oper ated cloth cutting machines and has particular reference to the means for sharpening the cutting member of the machine and in connection therewith to means for preventing the operator of the machine from being injured by the sharpened cutting member.

The invention provides new and improved means for accomplishing the above objects and the said means are so arranged as to make it impossible to sharpen. the cutting member without first withdrawing the machine from the material to be cut; this is a distinct advantage, inasmuch as, by sharpening the cutting member while the machine is on its passage through the material, sparks, caused by friction, are apt to fall on the said material and inflame the same.

My invention prohibits this manner of sharpening and consequently lessens the chances of fire, which may be so much greater as the material often is of a very inflammable nature.

The detailed construction of the preferred form of my invention is set forth in the following specification and illustrated in the accompanying drawings. 1 claim however all such changes in. the construction shown to which the spirit of the invention and the scope of the claims entitle me.

In the said drawings Figure 1 is a side elevation of a machine embodying my invention. Fig. 1 is a detail view of parts shown in Fig. 1. Fig. 2 is a front view of Fig. 1, with parts broken. away. Fig. 3 is a view similar to Fig. 2 but in section. Fig. f is a plan view of the sharpening means. Fig. 5 shows a modification of my invention applied to a different type of machine from. that illustrated in Fig. 1. Fig. 6 is a front view of Fig. 5 with the gearing and cutting mechanism. in section. Figs. 7, 8, and 9 are detail views. Fig. 10 shows a modification.

Referring more particularly to Figs. 1, 2, 3, and 1-, the numeral 1 indicates a base supporting the standard 2 upon which the driving mechanism. of the machine is mounted by means of abracket or casting 3.

The driving mechanism is in the .form of a motor having the armature f, the field magnet 5 and the pole pieces 6. 7 denotes the switch for turning on the current which is supplied through the cable 8. A detailed description of these elements is not thought necessary as they form no part of my invention, but may be constructed in any suitable and convenient manner.

9 indicates the cutting member or knife whichl in the present instance is of the type known as rotary. The knife is mounted upon the stud 1.0 of the standard 2. Motion is imparted to the knife by means of the bevel gears 11 and 12, the latter of which is carried by the armature shaft 13.

14 indicates my improved sharpening means, which preferably is in the form. of two grinding wheels 15 carried by the lever 16 which is pivoted at 17 on the bracket 3. The wheels are held in position shown in Fig. 1 by means of the coiled spring 18, the one end of which is fastened on the bracket 3, while the free end engages the lever 16 shown in Fig. 1.

When it is desired to sharpen the knife the wheels are brought down until they engage the sides of the knife, the latter is rotated, which in turn rotates the wheels as the same are loosely mounted as shown in Fig. 9.

The following means are employed to bring the wheels in Contact with the knife. A horizontal bar or lever 19 slides in the standard 3, which is provided with an aperture to allow of the passage of the bar. The rear end of this bar, that is the end adjacent the handle 23 of the machine, is provided with a projecting handle 20, which extends horizontally at right angles to the plane of the knife. The forward end of the bar is connected by means of the chain 21 or otherwise to the lever 16 at a point 22. From the drawing it will be seen that by pullingthe bar 19 rearwardly the point 22 will move upward and the wheels brought down and into contact with the knife, as shown in dotted lines. The handle is so positioned that this rearward movement of the bar 19 may be effected by a slight movement of the right hand forefinger, without the hand leaving the handle of the machine. When the finger is removed from the handle 20 the coiled spring 18 restores the wheels to their uppermost position.

The guard for preventing injury to the operator of the machine is preferably in the form of a ring 2st having the projection 25, which extends beyond the periphery of the knife, so that when the operators left hand, as is usual, is in front of the knife to smooth. the material, the said projection prevents the hand from coming into contact with the knife. A portion of the guard 26 envelops the knife and forms a weight 2'7 which acts as a presser foot upon the material.

It will be seen from the position of the guard as shown in Fig. 1 that the projection. prevents the wheels from coming into contact with knife and the same projection is purposely made so long as to accomplish this result; that is: it is absolutely necessary to drop the guard before sharpening the knife. Or in other words the machine must be removed from the material before this can be done.

My invention provides means whereby the guard is moved down automatically when the sharpening means are brought down. To this end the following means are employed: A spring lever (30 is suitably mounted in the standard 2 near the handle 23. The lower end of this lever forms a pin til, which projects through the standard and engages the hole (32 in the ring portion Z-l of the guard, by this means the guard is held in any position or height at which it may be set.

A bent wire (i3 motmted in a sleeve (ii in which it can turn vertically and the end 65 of the said wire en gages the lever (30 as shown in Figs. l, .l and 2. The other end (it; of the wire is connected to the bar it) by means of the spring (57. The bracket lti is connected to the guard by means of the yielding connection (38. '\s the bar it) is pulled back the end titi of the wire (33 is also pulled back by reason of the spring (37 and the end (35 lifts the pin (il. out of the hole (52 thereby allowing the guard to drop. Further pulling on the box 1?) simply stretches the spring (37. keeps the pin til out and brings the wheels 15 down on the knife.

It will thus be understood that the guard and the sharpening wheels are inter-dependent in their motions by reason of the yielding connection (38, which both tends to pull the wheels and pttsh the guards down, and when the guard is raised to push the wheels up.

When it is desired to adjust the position of the guard, the bar 19, is pulled back far enough to cause the pin til to disengage the hole (32, but not far enough back to change the position of the wheels 15. the guard is then adjusted to the proper height and the pin til allowed to engage that one of the holes which is opposite it. The said holes are close enough to allow of all practical desired adjustment.

The guard held on the standard by the following means, see Fig. 3. A circular recess 3] is formed in the standard 3 and the ring portion 2-1 of the guard is laid in the said recess. A ring 32 fits over the ring 24 and holds the same in place. Next the knife is screwed on to the hub of the gear 11 and locked in position by means of the clamp nut 33.

In Figs. 5, 6, 7, S, and 9, 1 have shown a different construction of the means of operating the grinding wheels and the guard, and a different type of the latter.

teferring more particularly to Figs. 5 and 7 it will be seen that the lever carrying the wheels and which is designated by the numeral -10 is pivoted on a stud ll and rocked by means of the slotted lever 42 and the horizontal bar 13 provided with the handle it, which in this instance is adapted to be set at any angle, preferred by the operator by means of the set screw -15. The said bar slides in a boss 46 on the standard of the tnachine and is further provided with a collar 47. A spring iS acting between the said boss and the collar keeps the wheels in their upper position. The guard is denoted by -19 and is adjustably fixed to the standard by means of the slot 50 and the set screw 51. which bears against the recess 52 in the guard. The latter is provided with an enlarged portion 53, which acts as a presser foot. The guard in this instance projects in front of the knife. The guard is removed by sliding itout around the periphery of the knife after removing the set screw 51.

While no connection is shown between the guard and the grinding wheels in this instance, this construction embodies the principle above referred to, namely that the guard must be removed before the knife can be sharpened. or in other words, the machine must be removed from the cloth.

In Fig. 10 is illustrated a guard carried by the lever Tl which is mounted on a stud on the left side of the standard near the handle of the machine. The said lever also forms a handle 72. spring 73 exerts a drjiwnward pressure on the guard, which may be set to any desired height. By connecting this guard to the sharpening wheel in a similar manner as shown in Fig. 7, it will be seen that by raising the handle 72 the guard will be tipped down and pull the wheels into working position.

The foregoing description thought to clearly illustrate my invention and the operation of the different parts.

in Fig. 1 is further shown an opening in the stainlard. This is for the purpose of carrying off the lint caused by the cutting. As the knife rotates the said lint is carried around with it. until it reaches the said opening when it is forced out of the machine by reason of the force of rotation. To further this the sides of the opening are slanting downwardly and are cut at an angle to the radius from the center of the knife to the point of the circumference at which the opening is lo cated.

What is claimed is:

i. In a cloth cutting machine the combination with a knife. :1 driving mechanism. sharpening means for said knife. a guard. a portion of which euvelops said knife and means for simultaneously lowering said guard and said sharpening means whereby the latter are brought into contact with said knife.

I. In a cloth cutting machine the combination with a knife. :1 driving mechanism. sharpening means for said knife. a guard. a portion of which envclops said knife. :1 yielding connection between said sharpening means and said guard and means for simultaneously lowering said guard and sharpening means. whereby the latter is brought: into contact with said kn e.

Ii. in a cloth cutting machine the combination with a knife. a driving mechanism. sharpening means for said knife. a guard. a portion of which cnvelops said knife. a handle. and means located adjacent said handle for simultaneously lowering said guard and bringing said sharpening means. into contact with said knife.

-t. In a rotating cloth cutting machine the combination with a knife. :1 driving mechanism. sharpening means for said knife. means for normally holding said sharpening means out of contact with said knife. a handle. a slidablc member interposed between said handle and said sharpening means and connected to the latter. whereby when the said member is pulled rearwardly the said sharpenim. means are brought into contact with said knife.

3. In a rotating cloth cutting machine the combination with a knife. :1 driving mechanism. sharpening means for said knife. a guard. a portion of which envelops said knife. means for adjusting and fixing the position of said guard. a yielding connection between said guard and said sharpening means. a handle. a movable member interposed between the latter and the means. whereby. when the said member is moved rearwardly. the said guard is released and lowered simultancous with the lid sharpening means.

in a rotary :loth cutting machine. the combination with a knife. :1 driving mechanism therefor. an adjustably mounted guard. a sprit latch for holding said guard in any predetermined pt ion. sharpening said aid sharpening means. and

means for knife. and means for withdrawing said latch whereby the said guard is lowered and simultaneously therewith the said sharpening means brought into contact with said knife.

T. in a cloth cutting machine the combination with a knife. a driving mechanism. sharpening means for said knife. a guard, a handle. a connection between said sharpening means and guard and means located adjacent the said handle for simultaneously lowering the said guard and bringing the sharpening means into contact: with said knife.

8. in a cloth cutting machine the combination with a knife, a driving mechanism, sharpening means for said knife, a guard, a handle, a yielding connection between said sharpening means and guard and means located adjacent the said handle for simultaneously lowering the said gnardand bringing the sharpening means into contact with said knife.

t). in a cloth cutting machine the combination with a knife, a driving mechanism, means for sharpening said knife, an adjustably mounted guard, and means for simultaneously lowering the guard and bringing the sharpening means into working position.

110. in a cloth cutting machine the combination with a knife, a driving mechanism, means for sharpening said knife, an adjustably mounted guard, a connection between said sharpening means and knife, and means for simul taneously lowering the said guard and the said sharpening means whereby the latter is brought into contact with said knife. I

11. In a cloth cutting machine the combination with a knife, a driving mechanism, sharpening means for said knife, an adjnstably mounted guard, a yielding connection between said sharpening means and knife and means for simultaneously lowering the said guard and the said sharpening means whereby the latter is brought into contact with said knife.

12. In a cloth cutting machine the combination with a knife, a driving mechanism, sharpening means for said knife, an adjustably mounted guard, a handle and means located adjacent said handle for simultaneously lowering the said guard and bringing the said sharpening means into contact: with the said knife.

ltl. In a cloth cutting machine the combination with a knife, a driving mechanism, sharpening means for said knife, an adjnstably mounted guard, a handle, a connection between said shar 'iening means and guard and means located adjacent the said handle for simultaneously lowering the said guard and bringing the sharpening means into contact; with said knife,

14. In a. cloth cutting machine the combination with a knife, a driving mechanism, sharpening means for said knife, an adjustably mounted guard, a handle, a yielding connection between said sharpening means and guard and means located adjacent the said handle for simultaneously lowering the said guard and bringing the sharpening means into contact: with said knife,

15. In a rotary cloth cutting machine the combination with a knife, a driving mechanism, means for sharpening the said knife, a guard and an adjustably mounted flexible connection between the said guard and the said sharpening means.

16. In a machine of the character described, the combination with a knife, sharpening means for said knife, a. movable member adapted to bring the said sharpening means into contact with the said knife, a perforated por tion on the said guard, means engaging the said perfora tions and holding the guard in its position, means actuated by the aforesaid member for disengaging the said holding means from the said perforations whereby when the said member is moved rearwardly the guard is compelled to drop in its lowermost: position, when the said sharpening means are brought into contact with the said knife.

17. In an electric cloth cutting machine the combination with a standard, a knife, a driving mechanism, sharpening means for the said knife, a movable member adapted to bring the said sharpening means into contact with the knife, a guard, a perforated ring portion on the said guard, a lever carried by the said standard, the said lever engag i'ng the said perforation and holding the guard in its position, an oscillating member engaging the aforesaid lever, a yielding connection interposed between the aforesaid movable member and the oscillating member, whereby, when the movable member is moved rearwardly, the said lever disengages the said perforations so that the said guard is moved down, to its lowermost position when the said sharpening means is brought into contact with the knife.

S" ned at New York, N, 31, this 10 day of July, 1906.

I ID\"ARD M. \VARING Witnesses Gno. A. MARsHALL, Ivan Koniosnnne. 

